JETTER VALVES ARE USED TO CONVERT STANDARD TRIPLEX PLUNGER PUMPS INTO SEWER CLEANING PUMPS. THE DISABLER PULSE VALVES HAVE ADJUSTABLE LEVERS ENABLING THE PUMP TO BE CHANGED TO EITHER CONFIGURATION BY TURNING THE HANDLE ON THE VALVE. WHEN FULLY ENGAGED THE VALVE STOPS THE CENTER VALVE FROM OPERATING. THIS CAUSES THE PUMP TO PULSATE GENERATING THE JETTING ACTION NEEDED FOR PIPE CLEANING.